What is the difference between interview and questionnaire

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What is the difference between interview and questionnaire?

What is the difference between interview and questionnaire?


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The difference between questionnaire and interview is as follows:

  1. A form consisting of a series of written or printed multiple choice questions, to be marked by the informants, is called questionnaire. A formal conversation between the interviewer and respondent wherein the two participates in the question-answer session is called interview
  2. The questionnaire method of collecting data involves emailing questionnaire to respondents in a written format. On the contrary, interview method is one wherein the interviewer communicates to the respondent orally.
  3. The questionnaire is objective while the nature of the interview is subjective.
  4. In an interview, open-ended questions are asked by the interviewer to the respondent. As against this, closed-ended questions are asked through a questionnaire.
  5. The questionnaire provides fact-based information to the respondents. Conversely, analytical information can be gathered through interviews.
  6. As question are written in a proper manner in a questionnaire, the order cannot be changed. Unlike interview, wherein the order of questions can be changed as per needs and preferences.
  7. The collection of data through questionnaire is relatively cheap and economical, as money is spent only on the preparation and mailing of the questionnaire to the respondent. In contrast, an interview is a little expensive method, because, to provide data either the respondents have to come to the interviewer or the interviewer has to visit the respondents individually.
  8. Questionnaire method is more time consuming than an interview, as in an interview, the responses are spontaneous, while the informant takes his own time to reply, in the case of the questionnaire.
  9. In questionnaire method, a single questionnaire is mailed to many respondents. However, only one person at a time can be interviewed in a case interview.
  10. The probability of non-responses is very high in case of the questionnaire, as many people avoid answering it and so they return the questionnaire with providing their responses. On the other hand, the chances of non-responses are almost nil in case of an interview, because of direct interaction between interviewer and respondent.
  11. In the questionnaire, it is not known, as to who replies it, which is not in the case of an interview.



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